Best Time to Fly IAH to MCO: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Orlando International
Data through July 2026 · Last updated October 18, 2026
3,628 flights were scheduled from Houston (IAH) to Orlando (MCO) in the last 12 months, and 81.9% of those that flew arrived on time, 4.3 points above the US average of 77.6%.
Among 3 airlines, United Airlines led with 85.5% on time and Frontier Airlines was last with 71.8%.
Over 24 months, Tuesday was the most reliable day (84% on time) and July the worst month (66%).
The cancellation rate was 0.9% (US average 1.8%).
IAH to MCO on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 85.5% | 70 min | 0.6% | 2,462 |
| Spirit Airlines | 76.9% | 77 min | 2.5% | 607 |
| Frontier Airlines | 71.8% | 105 min | 0.9% | 559 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to MCO
On-time arrival % by scheduled departure hour (local time), 7,185 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.7% | 0.8% | 256 |
| 6am–7am | 85.7% | 1.7% | 58 |
| 7am–8am | 91.8% | 0.6% | 779 |
| 8am–9am | 92.2% | 1.3% | 298 |
| 9am–10am | 83.7% | 1.9% | 626 |
| 10am–11am | 86.5% | 0.5% | 216 |
| 11am–12pm | 75.6% | 1.8% | 167 |
| 12pm–1pm | 82.8% | 1.5% | 849 |
| 1pm–2pm | 75.1% | 1.4% | 220 |
| 2pm–3pm | 76.0% | 0.7% | 869 |
| 3pm–4pm | 68.7% | 1.0% | 100 |
| 4pm–5pm | 81.5% | 1.1% | 521 |
| 5pm–6pm | 71.7% | 1.1% | 447 |
| 6pm–7pm | 77.7% | 1.3% | 780 |
| 7pm–8pm | 74.0% | 1.8% | 389 |
| 8pm–9pm | 65.4% | 1.6% | 439 |
| 9pm–10pm | 63.5% | 4.2% | 166 |
| 10pm–11pm | Limited data | 5 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH to MCO
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 86.2% | +3.3 pts | 0.7% | 153 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.8% | -4.1 pts | 1.9% | 314 |
| Summer peak (Jun 15 - Aug 15) | 65.7% | -17.2 pts | 1.2% | 1,158 |
| All other days | 82.9% | — | 1.3% | 5,560 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).